Why Does My Car Say No Key Detected?

December 28, 2023

A car key can be a convenient and reliable way to get around town, but it’s not without its issues. Sometimes your car’s security system or engine will refuse to start when it detects that the key fob is missing or not in range. This article will cover some of the most common reasons your car might say “No key detected” and what you can do to fix it.

A key fob has a small chip inside it that contains the code used to unlock and start your car’s doors. That chip can become damaged or faulty for a variety of reasons, and if that happens, you’ll likely receive the message “No key detected” on your car’s dashboard. In some cases, you may be able to turn on the engine and drive the car manually, but it’s best to have it looked at by a mechanic or car dealer as soon as possible.

One of the most common reasons your car might say no key detected is that the battery in the key fob is dead. You can try replacing it to see if that fixes the problem, but in some cases you’ll need to have a professional locksmith create a new fob for your vehicle. Make sure to clear out any aftermarket devices that use the same radio frequency as your fob before trying this. Also, you should never hold the key fob against your skin or in direct contact with any magnetic objects like credit cards.


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